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  <title>Constraints and statistics</title>

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    <h1><a href="//webrtc.github.io/samples/" title="WebRTC samples homepage">WebRTC samples</a> <span>Constraints &amp; statistics</span></h1>

    <section id="blurb">
      <p>This demo shows ways to use constraints and statistics in WebRTC applications.</p>
      <p>Set camera constraints, and click <strong>Get media</strong> to (re)open the camera with these included. Click <strong>Connect</strong> to create a (local) peer connection. The RTCPeerConnection objects <code>localPeerConnection</code> and <code>remotePeerConnection</code> can be inspected from the console.</p>
      <p>Setting a value to zero will remove that constraint. </p>
      <p>The lefthand video shows the output of <code>getUserMedia()</code>; on the right is the video after being passed through the peer connection. The transmission bitrate is displayed below the righthand video.</p>
    </section>

    <div>
      <button id="getMedia">Get media</button>
      <button id="connect" disabled>Connect</button>
      <button id="hangup" disabled>Hang Up</button>
    </div>


    <section id="constraints">
      <div id="getUserMedia">
        <div class="input">
          <h2>Camera constraints</h2>
          <div id="minWidth">
            <label>Min width <span>300</span>px:</label>
            <input type="range" min="0" max="1920" value="300">
          </div>
          <div id="maxWidth">
            <label>Max width <span>640</span>px:</label>
            <input type="range" min="0" max="1920" value="640">
          </div>
          <div id="minHeight">
            <label>Min height <span>200</span>px:</label>
            <input type="range" min="0" max="1080" value="200">
          </div>
          <div id="maxHeight">
            <label>Max height <span>480</span>px:</label>
            <input type="range" min="0" max="1080" value="480">
          </div>
          <div id="minFramerate">
            <label>Min frameRate <span>0</span>fps:</label>
            <input type="range" min="0" max="60" value="0">
          </div>
          <div id="maxFramerate">
            <label>Max frameRate <span>0</span>fps:</label>
            <input type="range" min="0" max="60" value="0">
          </div>
        </div>
        <div id="getUserMediaConstraints" class="output"></div>
      </div>

    </section>

    <section id="video">
      <div id="localVideo">
        <video autoplay muted></video>
        <div></div>
      </div>
      <div id="remoteVideo">
        <video autoplay muted></video>
        <div></div>
        <div id="bitrate"></div>
        <div id="peer"></div>
      </div>
    </section>

    <section id="statistics">
      <div id="senderStats"></div>
      <div id="receiverStats"></div>
    </section>

    <a href="https://github.com/webrtc/samples/tree/gh-pages/src/content/peerconnection/constraints" title="View source for this page on GitHub" id="viewSource">View source on GitHub</a>

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